_Bellerophon_ cf. _montfortianus_ Norwood and Pratten. _Bellerophon percarinatus_ Conrad. _Bulimorpha nitidula_ (Meek and Worthen) Keyes. _Capulus_ sp. _Soleniscus paludinæformis_ (Hall) White. _Sphærodoma texana_ (Shumard) Keyes. _Orthoceras_ sp. _Tainoceras occidentalis_ (Swallow) Hyatt? =30.= WILLARD SHALES. These shales are fifty-five feet thick in their thinnest exposure, and are thicker in some places. Bennett gives their thickness at Willard at from seventy-five to eighty-five feet, including a thin stratum of limestone.[10] The Bennett collection contains the following specimens taken from this thin limestone: _Fusulina secalica_ (Say) Fischer. _Meekella striaticostata_ (Cox) White and St. John. _Productus semireticulatus_ (Martin) d’Orbigny. _Bellerophon_ sp. =31.= CHOCOLATE LIMESTONE. This name, as well as the one preceding and the one following, are used merely for convenience here, as they have been used before for the designation of these rocks, knowing that with further study and careful tracing they will be found to be the equivalents of similar rocks on the Neosho river section. This limestone is buff brown in color, varying from seven to ten feet in thickness, composed principally of two layers of massive stone, the upper of which is composed largely of the large variety of _Fusulina secalica_. In the Kansas river region it always forms high escarpments with rocky edges. It is not rich in any fossils except the _Fusulinas_. _Fusulina secalica_ (Say). _Lophophyllum profundum_ (Milne-Edwards and Haime) Foerste. _Chonetes granulifer_ Owen. _Enteletes hemiplicata_ (Hall) Hall and Clarke. _Meekella striaticostata_ (Cox) White and St. John. _Productus cora_ d’Orbigny. _Productus nebraskensis_ Owen. _Seminula argentia_ (Shepard) Hall. =32.= Shales and sandstones shown near Dover, eighty-five feet in thickness, varying from light yellow to brownish red. =33.= DOVER LIMESTONE. A limestone about four feet in thickness and of grayish color. =34.= Somewhere from forty to seventy feet of shales, with occasional thin limestones with _Myalina perattenuata_. =35.= Ten to twelve inches of very fossiliferous limestone in thin layers. Numbers 32 to 35 are as exposed on Mission creek and its tributaries near Dover. Number 35 is shown in ravines southwest of Dover, in the high region east and south of Mission creek. _Fenestella_ sp. _Productus nebraskensis_ Owen. _Aviculopecten maccoyi_ Meek and Hayden. _Aviculopecten occidentalis_ (Shumard) Meek and Hayden. _Edmondia_ sp. _Limopteria marian_ (White) Beede. _Myalina perattenuata_ Meek and Hayden. _Myalina swallowi_ McChesney. _Pseudomonotis hawni_ Meek and Hayden. _Pseudomonotis_ cf. _kansasensis_ Beede. _Schizodus_ sp. _Schizodus_ sp. _Gastropod_ cast. _Loxonema_ sp. _Pleurotomaria perhumerosa_ Meek.